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p1687 Acura a/t fi signal b circuit high voltage what does that mean?

Vehicle: Acura

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Hi there,

This means there is an issue with the ECM. Here is some info for you.

P1687 ACURA - Automatic Transmission To Engine Control Module Signal 'B' Input High
Read more: https://www.autocodes.com/p1687_acura.html

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